这个词组是什么意思：...,conducted with reference to ... 完整的句子和详细的问题在补充里
A scientific study of language is based on the systematic investigation of data, conducted with reference to some general theory of language structure.
请问,这个词组应该怎么分,是conducted / with reference to 还是conducted with / reference to ?如果可以请告诉我整句句子的翻译,谢谢